Notice of Violation of IEEE Publication Principles e-STAB: Energy-efficient scheduling for cloud computing applications with traffic load balancing Cloud Computing is an evolving technology because of it reduced capital expenditure, maintenance and provides dynamic resource pooling, virtualization, on demand service & high availability. Cloudcomputing has been envisioned as a next generation architecture of IT Industries. Security & privacy is the major hurdle in the cloud environment because of its open and distributed architecture. This paper explores the cloud security threats and also discusses the existing security approaches to secure thecloud environment. In this paper we also proposed a novel Tri-mechanism for cloud security against data breach which provide all around security to the cloud architecture.